Physical Constraints of Very Large Humanoids@Sofia - I didn't put any constraints that it had to be a carbon based life form. I'm less interested in the biology than I am in what the physical constraints are limiting size, movement, etc... Even if we assumed a fictitious creature/robot that could indeed withstand the forces needed to survive itself, how would the surrounding environment hold up. Even the largest of dinosaurs wasn't this tall, and certainly not this heavy.